Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '3faeaf1a433f6da86f7a93c460fa05f125c62988fff16aa5f0dab94302bbb289' 
  AND token = 'RQQOC2XqGQ3LUkmEv5kyTGDsaz+7QLFYkyVPDW20fqA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}